I am trying to build communication across multiple Arduino using RS485. When i am trying to connect 3 Arudino nano together my code doesn't reach slave where as if i just do it between 2 Arduino it works. Am i missing any setup here?

Note when i am doing 2 i am not using breadboard, i am just trying to connect both A & B of master with slave A & B. When i do it with 3 Arduino Nano i am using breadboard + & - from master A & B to other slave A & B. Note - I didn't post code here as my question is more about connection, if required i will post it.

I am trying to build communication across multiple Arduino using RS485. When i am trying to connect 3 Arudino nano together using breadboard my code doesn't reach slave where as if i just if i do direct connection between 2 RS485 without breadboard it works but i use breadboard for 2 it doesn't work. Am i missing any setup here?

Breadboard connection - A & B are connected to + & - of both RS485.

Working connection - A & B of first RS485 connected to A & B of 2nd RS485.